Date: Mon, 25 Jun 2012 21:56:11 -0400 (EDT) From: Garrett Wollman <wollman@csail.mit.edu> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/169431: [mps] [cam] SAS bus scan generates thousands of lines to log Message-ID: <201206260156.q5Q1uB8C003199@nfs-prod-0.csail.mit.edu> Resent-Message-ID: <201206260210.q5Q2A7uI023114@freefall.freebsd.org>
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>Number: 169431 >Category: kern >Synopsis: [mps] [cam] SAS bus scan generates thousands of lines to log >Confidential: no >Severity: non-critical >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue Jun 26 02:10:07 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Garrett Wollman >Release: FreeBSD 9.0-STABLE amd64 >Organization: MIT Computer Science & Artificial Intelligence Lab >Environment: System: FreeBSD nfs-prod-0.csail.mit.edu 9.0-STABLE FreeBSD 9.0-STABLE #6 r237562M: Mon Jun 25 13:22:45 EDT 2012 wollman@xyz.csail.mit.edu:/usr/obj/usr/src/sys/CSAIL amd64 Local changes to sources do not affect mps driver. Only special tunable set is: hw.mps.max_chains=4096 ...as in previous testing (under 9.0 with a backported driver) we were able to exhaust the default limit of 2048. >Description: When scanning for devices connected to an LSI SAS2116 controller using the mps(4) driver, thousands of lines like this are generated on the console: Jun 25 19:21:20 nfs-prod-0 kernel: (probe752:mps0:0:753:0): INQUIRY. CDB: 12 0 0 0 24 0 Jun 25 19:21:20 nfs-prod-0 kernel: (probe752:mps0:0:753:0): CAM status: Invalid Target ID Jun 25 19:21:20 nfs-prod-0 kernel: (probe752:mps0:0:753:0): Error 22, Unretryable error Jun 25 19:21:20 nfs-prod-0 kernel: (probe753:mps0:0:754:0): INQUIRY. CDB: 12 0 0 0 24 0 Jun 25 19:21:20 nfs-prod-0 kernel: (probe753:mps0:0:754:0): CAM status: Invalid Target ID Jun 25 19:21:20 nfs-prod-0 kernel: (probe753:mps0:0:754:0): Error 22, Unretryable error Jun 25 19:21:20 nfs-prod-0 kernel: (probe754:mps0:0:755:0): INQUIRY. CDB: 12 0 0 0 24 0 Jun 25 19:21:20 nfs-prod-0 kernel: (probe754:mps0:0:755:0): CAM status: Invalid Target ID Jun 25 19:21:20 nfs-prod-0 kernel: (probe754:mps0:0:755:0): Error 22, Unretryable error This is new with the 9.1 kernel; 9.0 did not do this even with the backported driver. The drives are ultimately found and attached normally. >How-To-Repeat: Cause a bus rescan (e.g., by plugging a disk shelf into one of the ports on the controller). >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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